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Sleep

sleep

A natural and healthy, but temporary and periodical, suspension of the functions of the organs of sense, as well as of those of the voluntary and rational soul; that state of the animal in which there is a lessened acuteness of sensory perception, a confusion of ideas, and a loss of mental control, followed by a more or less unconscious state. A man that waketh of his sleep. O sleep, thou ape of death. (Shak)

Sleep is attended by a relaxation of the muscles, and the absence of voluntary activity for any rational objects or purpose. The pulse is slower, the respiratory movements fewer in number but more profound, and there is less blood in the cerebral vessels. It is susceptible of greater or less intensity or completeness in its control of the powers.

(Science: botany) Sleep of plants, a state of plants, usually at night, when their leaflets approach each other, and the flowers close and droop, or are covered by the folded leaves.

Synonym: Slumber, repose, rest, nap, doze, drowse.

Origin: AS. Slp; akin to OFries. Slp, OS. Slap, D. Slaap, OHG. Slaf, G. Schlaf, Goth. Slps. See Sleep.


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... that hypothesis makes sense if by chance alone the mutation was increased. (admittedly I didn't read the whole thing as I plan on passing out to sleep soon) However, if something is neither selected for or against, how did the mutations reach fixation? I suppose it could happen just by chance ...

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by badgertoes
Sat Dec 28, 2013 9:01 am
 
Forum: Evolution
Topic: Gender divison in two opposites is greatest mistake of manki
Replies: 22
Views: 5773

Re: Extended sleeping

when you're stressed and you're adrenaline is up then you "feel" like you don't need to sleep. After the stress leaves and your adrenaline returns to normal levels it can "feel" like you never have enough. Sometimes it can take a while to fall back into ...

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by bioduchamp
Fri Nov 22, 2013 3:09 pm
 
Forum: Human Biology
Topic: Extended sleeping
Replies: 3
Views: 863

Extended sleeping

... late at night and then getting up early in the morning to practice some more. I have been really stressed and and haven't had more than 5 hours sleep for ages. About 5 days ago it was all over. Everything was done and I'd finished university for the year. Since then I've been sleeping for about ...

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by Zsingleton
Tue Nov 05, 2013 9:20 pm
 
Forum: Human Biology
Topic: Extended sleeping
Replies: 3
Views: 863

Re: Fats in the Late Night?

... snack foods, which of course generally contain an abundance of saturated fat and calories. Although there is some medical evidence to suggest that sleep deprivation can result in the increased uptake of glucose to fat, there is little to no good evidence to support the notion that eating in the ...

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by Coelacanth
Sun Oct 13, 2013 5:50 am
 
Forum: Physiology
Topic: Fats in the Late Night?
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Re: Sound and how the brain reacts to it

... dogs grooming themselves or bitting their nails. Then I also noticed sweeping is the same. But for me its such a relaxed state that I could go to sleep at any moment, but its also like a heightened state of brain function. I seem to concentrate better & work better when I hear these sounds. ...

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by angwal
Sat Sep 28, 2013 3:42 am
 
Forum: Human Biology
Topic: Sound and how the brain reacts to it
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